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Oblique propagating extraordinary spin-electron acoustic waves

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Spin-electron acoustic waves (SEAWs) are found in spin-polarized plasmas due to the separate spin evolution (SSE), where electrons with different spin projections are considered as two different species. The contribution… Click to show full abstract

Spin-electron acoustic waves (SEAWs) are found in spin-polarized plasmas due to the separate spin evolution (SSE), where electrons with different spin projections are considered as two different species. The contribution of the transverse part of the electric field appears to be rather large in the extraordinary SEAW. Summing up all described above, we consider the extraordinary spin-electron acoustic waves at the oblique propagation relatively to the magnetic field direction. Our analysis shows that the SSE causes four oblique propagating waves. Two of them are reported earlier. Hence, we report about two extra waves which are purely oblique waves disappearing in the electrostatic limit. Extra solutions appear as the fine structure of two earlier reported waves.Spin-electron acoustic waves (SEAWs) are found in spin-polarized plasmas due to the separate spin evolution (SSE), where electrons with different spin projections are considered as two different species. The contribution of the transverse part of the electric field appears to be rather large in the extraordinary SEAW. Summing up all described above, we consider the extraordinary spin-electron acoustic waves at the oblique propagation relatively to the magnetic field direction. Our analysis shows that the SSE causes four oblique propagating waves. Two of them are reported earlier. Hence, we report about two extra waves which are purely oblique waves disappearing in the electrostatic limit. Extra solutions appear as the fine structure of two earlier reported waves.

Keywords: extraordinary spin; electron acoustic; acoustic waves; oblique propagating; spin; spin electron

Journal Title: Physics of Plasmas
Year Published: 2018

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